Observed 8:55 AM CDT at KSFY

Lanark, IL weather

Sunny and 56°13°, 12°7° warmer than a typical Oct 24.

Mostly agree

Now 56°13°

Sunny

Wind: 5 mph8 km/h; From the southeast. 58–10 mph16 km/h through 9 PM
Dew point: 48°9°; Comfortable
UV index: 1Low; Moderate 12–4 PM · peak 4
Pressure: 30.37 inHg1028 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

3°2° warmer than this time yesterday (53°11° then, 56°13° now)

Good hours for

High 71°22° today at 2 PM
Below 60°16° tonight after 9 PM
Low 49°9° tomorrow at 7 AM
Above 60°16° tomorrow by 10 AM

This morningUp to 64°18° by 11 AM · Mostly cloudy
This afternoonUp to 71°22° by 2 PM · Partly cloudy
TonightDown to 51°11° by 4 AM · Mostly cloudy
Tomorrow morningUp to 65°18° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 74°23° by 4 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 5 AM · Mostly cloudy
Monday morningNear 51°11° · Mostly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 9a	Cloudy	59°15° (likely 54°12° to 59°15°)	59°15°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	62%	78%	1
Sat 10a	Mostly cloudy	61°16° (likely 57°14° to 61°16°)	61°16°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	57%	71%	1
Sat 11a	Mostly cloudy	64°18° (likely 61°16° to 65°18°)	64°18°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	53%	62%	2
Sat 12p	Sunny	67°19° (likely 64°18° to 68°20°)	67°19°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	49%	40%	3
Sat 1p	Sunny	69°21° (likely 67°19° to 70°21°)	69°21°	0%	10 mph16 km/h from S, gusts 16 mph25 km/h	45%	38%	4
Sat 2p	Sunny	71°22° (likely 69°21° to 72°22°)	71°22°	0%	10 mph16 km/h from S, gusts 15 mph24 km/h	42%	32%	4
Sat 3p	Sunny	71°22° (likely 69°21° to 72°22°)	71°22°	0%	10 mph16 km/h from S, gusts 15 mph25 km/h	42%	33%	3
Sat 4p	Mostly sunny	71°22° (likely 69°21° to 72°22°)	71°22°	0%	10 mph16 km/h from S, gusts 16 mph25 km/h	42%	40%	2
Sat 5p	Sunny	70°21° (likely 67°19° to 71°22°)	70°21°	0%	10 mph16 km/h from S, gusts 17 mph27 km/h	42%	32%	1
Sat 6p	Partly cloudy	67°19° (likely 63°17° to 67°19°)	67°19°	0%	10 mph16 km/h from S, gusts 13 mph22 km/h	47%	41%	0
Sat 7p	Cloudy	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	54%	80%	0
Sat 8p	Partly cloudy	61°16° (likely 60°16° to 62°17°)	61°16°	0%	5 mph8 km/h from S, gusts 14 mph22 km/h	58%	79%	0
Sat 9p	Partly cloudy	59°15° (likely 59°15° to 62°17°)	59°15°	0%	5 mph8 km/h from S, gusts 13 mph21 km/h	62%	76%	0
Sat 10p	Partly cloudy	58°14° (likely 57°14° to 60°16°)	58°14°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	64%	58%	0
Sat 11p	Partly cloudy	57°14° (likely 56°13° to 59°15°)	57°14°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	67%	81%	0
Sun 12a	Cloudy	56°13° (likely 55°13° to 59°15°)	56°13°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	69%	90%	0
Sun 1a	Cloudy	54°12° (likely 54°12° to 58°14°)	54°12°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	74%	91%	0
Sun 2a	Cloudy	53°12° (likely 53°12° to 56°13°)	53°12°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	74%	93%	0
Sun 3a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	5 mph8 km/h from S, gusts 10 mph16 km/h	77%	92%	0
Sun 4a	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	80%	89%	0
Sun 5a	Cloudy	51°11° (likely 50°10° to 53°12°)	51°11°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	80%	90%	0
Sun 6a	Cloudy	50°10° (likely 49°9° to 52°11°)	49°9°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	80%	96%	0
Sun 7a	Cloudy	49°9° (likely 49°9° to 52°11°)	48°9°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	83%	96%	0
Sun 8a	Partly sunny	51°11° (likely 49°9° to 52°11°)	51°11°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	77%	89%	0
Sun 9a	Cloudy	55°13° (likely 54°12° to 56°13°)	55°13°	0%	5 mph8 km/h from S, gusts 7 mph12 km/h	77%	76%	1
Sun 10a	Cloudy	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	65%	73%	1
Sun 11a	Cloudy	65°18° (likely 62°17° to 66°19°)	65°18°	0%	5 mph8 km/h from S, gusts 12 mph20 km/h	56%	64%	2
Sun 12p	Partly sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	51%	75%	3
Sun 1p	Cloudy	72°22° (likely 69°21° to 72°22°)	72°22°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	46%	74%	3
Sun 2p	Partly sunny	73°23° (likely 71°22° to 74°23°)	73°23°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	44%	67%	3
Sun 3p	Cloudy	73°23° (likely 71°22° to 75°24°)	73°23°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	44%	78%	3
Sun 4p	Cloudy	74°23° (likely 71°22° to 75°24°)	74°23°	0%	5 mph8 km/h from S, gusts 10 mph17 km/h	43%	82%	2
Sun 5p	Partly sunny	73°23° (likely 69°21° to 73°23°)	73°23°	0%	0 mph0 km/h, gusts 9 mph15 km/h	46%	68%	1
Sun 6p	Cloudy	70°21° (likely 64°18° to 70°21°)	70°21°	0%	0 mph0 km/h, gusts 6 mph10 km/h	49%	78%	0
Sun 7p	Cloudy	65°18° (likely 62°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph8 km/h	58%	78%	0
Sun 8p	Cloudy	60°16° (likely 60°16° to 63°17°)	60°16°	0%	0 mph0 km/h, gusts 6 mph10 km/h	69%	80%	0
Sun 9p	Partly cloudy	58°14° (likely 58°14° to 61°16°)	58°14°	0%	0 mph0 km/h, gusts 7 mph12 km/h	75%	71%	0
Sun 10p	Cloudy	57°14° (likely 56°13° to 60°16°)	57°14°	0%	0 mph0 km/h, gusts 7 mph11 km/h	77%	78%	0
Sun 11p	Cloudy	56°13° (likely 55°13° to 59°15°)	56°13°	0%	0 mph0 km/h, gusts 6 mph10 km/h	77%	82%	0
Mon 12a	Cloudy	55°13° (likely 54°12° to 58°14°)	55°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	80%	82%	0
Mon 1a	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 9 mph14 km/h	80%	83%	0
Mon 2a	Cloudy	53°12° (likely 53°12° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 10 mph16 km/h	83%	91%	0
Mon 3a	Cloudy	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 13 mph21 km/h	86%	93%	0
Mon 4a	Cloudy	51°11° (likely 51°11° to 53°12°)	51°11°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	89%	86%	0
Mon 5a	Cloudy	50°10° (likely 50°10° to 53°12°)	48°9°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	89%	84%	0
Mon 6a	Cloudy	50°10° (likely 50°10° to 54°12°)	48°9°	0%	5 mph8 km/h from NE, gusts 15 mph24 km/h	86%	87%	0
Mon 7a	Cloudy	50°10° (likely 50°10° to 54°12°)	48°9°	0%	5 mph8 km/h from NE, gusts 14 mph23 km/h	86%	85%	0
Mon 8a	Mostly cloudy	52°11° (likely 51°11° to 54°12°)	52°11°	0%	5 mph8 km/h from NE, gusts 13 mph21 km/h	83%	75%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 72°22°, low 49°9°. Typical 60°16° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly cloudy, 64°18°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Official NWS forecast
Today: Partly sunny. High near 72, with temperatures falling to around 70 in the afternoon. South wind 5 to 10 mph.
Tonight: Partly cloudy. Low around 49, with temperatures rising to around 51 overnight. South wind 5 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
69°21°–72°22°
Low, likely
49°9°–53°12°
Typical high / low
60°16° / 36°2°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 75°24°, low 50°10°. Typical 60°16° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 75, with temperatures falling to around 73 in the afternoon. South wind 0 to 5 mph.
Night: Mostly cloudy, with a low around 50. Southeast wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
71°22°–75°24°
Low, likely
49°9°–52°11°
Typical high / low
60°16° / 35°2°
Wind
8 mph13 km/h, gusts 14 mph22 km/h
UV peak
3
Monday, Oct 26. Cloudy. High 68°20°, low 45°7°. Typical 59°15° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 68.
Night: Mostly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–70°21°
Low, likely
45°7°–52°11°
Typical high / low
59°15° / 35°2°
Wind
15 mph24 km/h, gusts 23 mph37 km/h
UV peak
3
Tuesday, Oct 27. Mostly cloudy. High 68°20°, low 51°11°. Typical 58°14° / 35°2°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 68.
Night: Mostly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 68°20°).
High, likely
66°19°–69°21°
Low, likely
48°9°–51°11°
Typical high / low
58°14° / 35°2°
Wind
12 mph19 km/h, gusts 24 mph38 km/h
UV peak
3
Wednesday, Oct 28. Showers. High 72°22°, low 49°9°. Typical 58°14° / 34°1°. Rain 0.05 in1.3 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 58°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after 7am. Mostly sunny, with a high near 72.
Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
70°21°–72°22°
Low, likely
49°9°–57°14°
Typical high / low
58°14° / 34°1°
Wind
16 mph25 km/h, gusts 27 mph43 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 68°20°, low 45°7°. Typical 57°14° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: A slight chance of rain showers after 1am. Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–72°22°
Low, likely
45°7°–58°14°
Typical high / low
57°14° / 34°1°
Wind
11 mph18 km/h, gusts 29 mph46 km/h
UV peak
2
Friday, Oct 30. Showers. High 67°19°, low 47°8°. Typical 57°14° / 34°1°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 62°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly sunny, with a high near 67. Chance of precipitation is 30%.
Night: A chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–76°24°
Low, likely
44°7°–59°15°
Typical high / low
57°14° / 34°1°
Wind
14 mph22 km/h, gusts 26 mph42 km/h
UV peak
1
Saturday, Oct 31. Drizzle. High 68°20°, low 56°13°. Typical 56°13° / 33°1°. Rain 0.14 in3.6 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  40% chance
3. Evening
  6 PM–midnight
  Drizzle, 62°17°
  50% chance · 0.06 in1.4 mm
4. Overnight
  midnight–6 AM
  Drizzle, 60°16°
  50% chance · 0.06 in1.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–75°24°
Low, likely
51°11°–61°16°
Typical high / low
56°13° / 33°1°
Wind
13 mph20 km/h, gusts 29 mph47 km/h
Sunday, Nov 1. Drizzle. High 63°17°, low 57°14°. Typical 56°13° / 33°1°. Rain 0.73 in19 mm, 50% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Drizzle, 61°16°
  50% chance · 0.3 in7.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 63°17°
  40% chance · 0.39 in9.9 mm
3. Evening
  6 PM–midnight
  Drizzle, 61°16°
  40% chance · 0.09 in2.2 mm
4. Overnight
  midnight–6 AM
  Drizzle, 55°13°
  40% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°–64°18°
Low, likely
53°12°–60°16°
Typical high / low
56°13° / 33°1°
Wind
22 mph36 km/h, gusts 34 mph55 km/h
UV peak
2
Monday, Nov 2. Drizzle. High 61°16°, low 51°11°. Typical 55°13° / 33°1°. Rain 0.26 in6.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 55°13°
  30% chance · 0.06 in1.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 55°13°
  30% chance · 0.12 in3 mm
3. Evening
  6 PM–midnight
  Drizzle, 57°14°
  30% chance · 0.02 in0.6 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–66°19°
Low, likely
45°7°–62°17°
Typical high / low
55°13° / 33°1°
Wind
25 mph40 km/h, gusts 38 mph61 km/h

10 days15 days30 days

The outlook

Today
Dry, high 72°, low 49°.
Tomorrow
Dry, high 75°, low 50°, warming up.
Monday
Dry, high 68°, low 45°, cooling off.
Rest of week
Highs 61–72°; chance of precipitation on Saturday, Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (DVN) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Mississippi River at Fulton

22 mi

Below flood stage

Level: 4.7 ft
Flow: 30,400 cfs

Forecast peak 4.9 ft Sat 1 PM

Reading from Sat 8 AM · NWS gauge page

Elkhorn Creek (IL) near Penrose

16 mi

Level: 3.2 ft
Flow: 85 cfs

Reading from Sat 7:45 AM · NWS gauge page

Pecatonica River at Freeport

18 mi

Below flood stage

Level: 5.3 ft
Flow: 994 cfs

Reading from Sat 7:30 AM · NWS gauge page

Rock River at Como

23 mi

Below flood stage

Level: 4.7 ft
Flow: 5,920 cfs

Reading from Sat 8:15 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 90% less heating than a typical week.

This week 13Typical 129

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Today, 10:00 AM–8:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Mount Carroll · official normals 1991–2020 · records 1897–2026

Oct 24, today vs a typical year

Today’s expected high is 12°7° warmer than typical.

Last 7 days vs normal

On average 3°2° warmer than normal (daily mean temperature).

−3°−2°SunOct 18
+1°±0°MonOct 19
+3°+1°TueOct 20
+4°+2°WedOct 21
+7°+4°ThuOct 22
+11°+6°FriOct 23
—SatOct 24

Lanark weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 41 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 35 min less
Golden hour: 5:24–6:21 PM; Morning 7:05–8:01 AM
Blue hour: 6:21–6:32 PM; Morning 6:54–7:05 AM; first light 6:54 AM

Stars tonight? Poor

Clouds most of the night (about 81% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:35 AM · rises 5:02 PM
Full moon: Oct 25
New moon: Nov 9

Looking west from Lanark. A level horizon.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Lanark, IL weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Mississippi River at Fulton

Elkhorn Creek (IL) near Penrose

Pecatonica River at Freeport

Rock River at Como

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon